<template>
  <div class="article-page">
    <nav class="my-nav van-hairline--bottom">
      <a href="javascript:;"
      @click="changeSorter('weight_desc')"
      :class="{ active: sorter === 'weight_desc'}"
      >推荐</a>
      <a href="javascript:;"
      @click="changeSorter(null)"
      :class="{ active: sorter === null}"
      >最新</a>
      <div class="logo"><img src="@/assets/logo.png" alt="" /></div>
    </nav>

    <van-list
      v-model="loading"
      :finished="finished"
      finished-text="没有更多了"
      @load="onLoad"
    >
      <ArticleItem
        v-for="(item, index) in list"
        :key="index"
        :item="item"
      ></ArticleItem>
    </van-list>
  </div>
</template>

<script>
import { getArticles } from "@/api/article";
export default {
  name: "article-page",
  async created() {
    const { data } = await getArticles({
      current: this.current,
      sorter: this.sorter,
    });
    console.log(data);
    this.list = data.rows;
  },
  data() {
    return {
      list: [],
      current: 1,
      sorter: "weight_desc",
      loading: false,
      finished: false,
    };
  },
  methods: {
    async onLoad() {
      const { data } = await getArticles({
        current: this.current,
        sorter: this.sorter,
      });
      this.list.push(...data.rows);
      this.loading = false;
      this.current++;
      console.log(data)
      if (this.current > data.pageTotal) {
        this.finished = true;
      }
    },
    changeSorter (value) {
      this.sorter = value

      // 重置条件
      this.current = 1
      this.list = []
      this.finished = false

      this.loading = true
      this.onLoad()
    }
  },
};
</script>

<style lang="less" scoped>
.article-page {
  margin-bottom: 50px;
  margin-top: 44px;
  .my-nav {
    height: 44px;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 999;
    background: #fff;
    display: flex;
    align-items: center;
    > a {
      color: #999;
      font-size: 14px;
      line-height: 44px;
      margin-left: 20px;
      position: relative;
      transition: all 0.3s;
      &::after {
        content: "";
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: 0;
        width: 0;
        height: 2px;
        background: #222;
        transition: all 0.3s;
      }
      &.active {
        color: #222;
        &::after {
          width: 14px;
        }
      }
    }
    .logo {
      flex: 1;
      display: flex;
      justify-content: flex-end;
      > img {
        width: 64px;
        height: 28px;
        display: block;
        margin-right: 10px;
      }
    }
  }
}
</style>